JP4800834B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner having an improved pipe cover that closes a refrigerant pipe outlet and holds down a refrigerant pipe.

  In general, an indoor unit of a ceiling-embedded air conditioner is composed of a sheet metal casing and a heat insulating material incorporated into the inner surface of the casing, and is attached and fixed to the ceiling space of the air-conditioned room.

  The indoor unit main body accommodates a heat exchanger, a blower, an electrical component box, and the like, and the refrigerant pipe extending from the heat exchanger is a refrigerant pipe lead-out portion that is an opening provided in a side surface of the indoor unit main body. It is pulled out from.

  A pipe cover is attached to the refrigerant pipe lead-out portion to close the opening, and the refrigerant pipe is pressed against the indoor unit main body by the pipe cover and fixed.

  Conventional piping covers are formed simultaneously by attaching a heat insulating material to a resin member or a sheet metal member with an adhesive material, or setting a sheet metal member in a foamed polystyrene mold. For this reason, when using a resin member, the mold becomes expensive, the outdoor unit is also expensive, and when using a sheet metal member, it is difficult to thicken the seal portion around the refrigerant pipe, A sheet metal member and a foamed polystyrene co-molded product or a material to which a heat insulating material is attached have problems that separation of the sheet metal member and the foamed polystyrene is difficult and is not suitable for recycling.

Patent Document 1 discloses an indoor unit of an air conditioner in which a pipe cover (pipe restraining plate) is attached with a metal plate, which is a strength member disposed at the center, covered with a heat insulating material and integrally molded. Is disclosed. However, the piping cover described in Patent Document 1 has a problem that it is difficult to separate the metal plate and the heat insulating material covering the metal plate, and it is difficult to recycle.
JP 2001-74264 A

  The present invention has been made in consideration of the above-described circumstances, and is an indoor unit for an air conditioner equipped with a pipe cover that is inexpensive, sufficiently heat-insulating, easily separated from a sheet metal member and a heat insulating material, and suitable for recycling. The purpose is to provide.

In order to achieve the above-described object, an indoor unit of an air conditioner according to the present invention is provided on a side surface of a casing, and a refrigerant pipe outlet for leading a refrigerant pipe extending from the indoor heat exchanger to the outside of the casing; In the indoor unit of an air conditioner provided with a pipe cover for closing the refrigerant pipe outlet and holding the refrigerant pipe, the pipe cover is made of a metal plate attached to the casing, and the casing of the plate The plate member and the heat insulating member are integrated so as to be separable by engagement, and a vertical positioning engagement piece extending in the horizontal direction and a side portion of the heat insulating member are engaged with the plate member. A vertically disengaging engagement piece extending in the vertical direction is provided, a vertical positioning engagement recess for engaging the vertical positioning engagement piece is provided in the heat insulating member, and the heat insulating member is slid while being bent in front. Characterized by integrating the heat insulating member and the plate member detachably.

  According to the indoor unit of an air conditioner according to the present invention, an indoor unit of an air conditioner provided with a pipe cover that is inexpensive, sufficiently heat-insulating, easily separated from a sheet metal member and a heat insulating material, and suitable for recycling is provided. can do.

  An indoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an indoor unit of an air conditioner according to an embodiment of the present invention, and FIG. 2 shows an internal structure by removing the ceiling panel of the indoor unit of the air conditioner according to an embodiment of the present invention. FIG.

  As shown in FIGS. 1 and 2, the indoor unit 1 of the air-conditioning apparatus of the present embodiment is used by being installed in a ceiling space of an air chamber, and includes a housing 2.

  The casing 2 is detachably mounted with a ceiling panel 3 having a suction port 3a and an air outlet 3b provided on the lower surface thereof, and a heat exchanger (not shown) and a blower 4 are disposed inside.

  The side surface 2a of the casing 2 is provided with a refrigerant pipe outlet 7 for taking out the refrigerant pipe 6 extending from the indoor heat exchanger and having a pipe heat insulating member 5 wound around the outer periphery thereof. A semicircular accommodation hole 2b in which a part of the refrigerant pipe 6 is accommodated is connected to one horizontal side of the outlet 7.

  The refrigerant pipe outlet 7 is closed by the pipe cover 8 after the refrigerant pipe 6 is led out.

  As shown in FIGS. 3 and 4, the pipe cover 8 includes a metal plate 9 attached to the housing 2 and a heat insulating member attached to the inside of the housing of the plate 9 when the plate 9 is attached to the housing 2. The plate material 9 and the heat insulating member 10 are integrated so as to be separable.

  The plate member 9 is made of metal and has a substantially rectangular plate shape. Two vertical positioning engagement pieces 9a extending in the horizontal direction and parallel to each other are provided at a position below the center of the plate member 9 and are formed on the upper side. Two semicircular pipe accommodating portions 9c are formed so as to sandwich the insertion fixing claw portion 9b, and rising portions 9d that gradually widen upward are formed on both side portions. A disengagement prevention engagement piece 9e extending inward is provided in the vicinity of the upper end of the upper portion, and an L-shaped lower disengagement engagement claw 9f extending inward is provided on the lower side. Further, near the both sides of the lower side, there is provided a temporary latching piece 9g that protrudes on the opposite side (outward) from the disengagement preventing engagement piece 9e, and is folded back to the same side as this temporary latching piece 9g. A mounting screw hole 9i is provided in the bent portion 9h.

Further, the heat insulating member 10 is foamed polystyrene made plate-like, without the same outer contour as the plate member 9, the thick portion 10a having a recess 10a ₁ for flexibility imparted is formed in the upper portion proximity The thick portion 10a is formed with a pipe housing portion 10b having a position and shape that matches the pipe housing portion 9c of the plate material 9 when the plate member 9 and the heat insulating member 10 are integrated. Engagement step portions 10c that engage with the disengagement prevention engagement pieces 9e are formed on both sides, and a rectangular shape that extends in the horizontal direction is engaged with the vertical positioning engagement pieces 9a at a position slightly below the center. A vertical positioning engagement concave portion 10d is provided, and an engagement notch portion 10e that engages with a lower detachment prevention engagement claw 9f is provided at the lower portion. Furthermore, a thin portion 10f is formed at the center of both sides (short sides) of the vertical positioning engaging recess 10d.

  As shown in FIGS. 5 and 6, the plate member 9 and the heat insulating member 10 are integrated by sliding the heat insulating member 10 along the plate member 9 while bending the heat insulating member 10 as indicated by an upward arrow in the drawing. These engagement step portions 10c are engaged with each other, engaged with the disengagement prevention engagement piece 9e, and further, the heat insulating member 10 is engaged with the vertical positioning engagement piece 9a.

  When the heat insulating member 10 is attached to the plate member 9, since the thin portion 10 f is formed in the heat insulating member 10, the heat insulating member 10 is easily bent even if it is a relatively hard heat insulating member. Easy to install.

  As shown in FIG. 4, it is preferable that the lubricant 11 is applied to the surface of the heat insulating member 10 and the lubricant 11 is interposed between the contact surfaces of the plate member 9 and the heat insulating member 10. Thereby, the friction sound resulting from the shrinkage | contraction and expansion | swelling by the temperature change of the board | plate material 9 and the heat insulation member 10 can be prevented at the time of a driving | running of an air conditioning apparatus.

  Note that separation of the plate material 9 and the heat insulating material 10 can be easily performed because no adhesive or the like is used.

  The pipe cover 8 is attached to the housing 2 as follows.

  As shown in FIGS. 7 to 9 (shown upside down from FIGS. 1 and 2), the heat exchanger is incorporated, the refrigerant pipe 6 is led out from the refrigerant pipe outlet 7, and further the refrigerant pipe. In a state where a part (half) of 6 is accommodated in the accommodating hole 2b, the piping cover 8 is tilted so that the temporary engagement locking piece 9g and the temporary engagement locking hole 2c are not locked. The cover 8 is lowered, and the insertion fixing claw portion 9b is inserted into the concave insertion fixing claw portion receiver 2d provided to protrude inside the side surface 2a of the housing 2, and half is accommodated in the accommodation hole portion 2b. The refrigerant pipe 6 is completely accommodated by the pipe accommodating portions 9 c and 10 b, and the temporary hooking piece 9 g is temporarily hooked in the temporary hooking hole 2 c provided in the lower part of the housing 2. At this time, since the pipe cover 8 is in a state of pressing the pipe heat insulating member 5 wound around the outer periphery of the refrigerant pipe 6, the pipe cover 8 is pressed upward in the figure by the spring back due to the elasticity of the pipe heat insulating member 5. The latching piece 9g and the provisional latching hole 2c are retained. In this state, the mounting screw hole 9i and the mounting screw 12 passing through the mounting screw hole 2f provided in the bent portion 2e of the housing 2 are provided. Using, the pipe cover 8 is screwed to the housing 2.

  By attaching the pipe cover 8 as described above, the insertion fixing claw portion receiver 2d is provided, and the piping cover 8 is inclined and the insertion fixing claw portion 9b is inserted into the insertion fixing claw portion receiver 2d. Since the spring back of the heat insulating member 5 for pipe is used to hold the temporary latching piece 9g and the temporary latching hole 2c, the pipe cover 8 can be easily attached.

  The indoor unit of the air conditioner of the present embodiment is different from the conventional one that uses a pipe cover in which a heat insulating member is attached to a sheet metal member with an adhesive material or a sheet metal member is simultaneously molded into a foamed polystyrene. A heat insulating member having a structure is provided, and the heat insulating member is integrated so that the plate member and the heat insulating member can be separated by engagement. Therefore, the assembly is easy and can be manufactured at low cost, and the separation is easy and suitable for recycling. .

  In addition, it is easy to attach to the housing, and sufficient strength can be obtained, and the thickness and shape necessary for sealing around the refrigerant piping can be easily created by the thick part of the heat insulating member, and the heat inside the housing Can be prevented from being transmitted outside the housing.

  According to the indoor unit of the air conditioner of the present embodiment, an indoor unit of the air conditioner having a pipe cover that is inexpensive, can be sufficiently insulated, can easily separate the sheet metal member from the heat insulating material, and is suitable for recycling is realized. Is done.

The perspective view of the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The perspective view which removes the ceiling panel of the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention, and shows the attachment state of a piping cover. The perspective view which isolate | separates and shows the piping cover used for the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The perspective view which isolate | separates and shows the piping cover used for the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The top view of the piping cover used for the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. FIG. 6 is a longitudinal sectional view taken along line AA in FIG. 5. The side view which shows the attachment state of the piping cover of the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The side view of the indoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The longitudinal cross-sectional view which follows the BB line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Indoor unit of air conditioning apparatus, 2 ... Housing, 2a ... Side surface, 3 ... Ceiling panel, 4 ... Blower, 5 ... Heat insulation member for pipes, 6 ... Refrigerant pipe, 7 ... Refrigerant pipe outlet, 8 ... Pipe cover, 9 ... board material, 10 ... heat insulation member.

Claims (3)

A refrigerant pipe outlet for providing a refrigerant pipe extending from the indoor heat exchanger to the outside of the casing;
In the indoor unit of the air conditioner provided with a pipe cover for closing the refrigerant pipe outlet and holding the refrigerant pipe,
The pipe cover is a metal plate attached to the housing;
It consists of a heat insulating member attached to the inside of the housing of this plate material,
The plate member and the heat insulating member are integrated so as to be separable by engagement,
A vertical positioning engagement piece extending in the horizontal direction on the plate member and a disengagement prevention engagement piece extending in the vertical direction by engaging a side portion of the heat insulation member are provided. An indoor unit for an air conditioner, wherein a direction positioning engagement recess is provided and the plate member and the heat insulating member are detachably integrated by sliding while sliding the heat insulating member. The indoor unit of an air conditioner according to claim 1, wherein a thin wall portion is provided on the heat insulating member to make the heat insulating member flexible. The piping cover is provided with a locking piece, the housing is provided with a locking hole for locking the locking piece, the refrigerant pipe is provided with a heat insulating material covering the outer periphery, and the piping cover is attached to the housing The indoor unit of an air conditioner according to claim 1 or 2, wherein the engagement state of the engagement piece and the engagement hole is maintained by a repulsive force of the heat insulating member pressing the pipe cover. .

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